Vídeos externos sobre a geometria no dia a dia

Aqui temos links a vídeos sobre geometria:

http://www.authorstream.com/Presentation/renataopcao-104981-feira-geom-trica-education-ppt-powerpoint/

http://www.youtube.com/watch?v=9cAU4xMKn7I&feature=related

http://www.youtube.com/watch?v=9cAU4xMKn7I&feature=related

http://www.youtube.com/watch?v=XuJpwCFL1xA&feature=related

http://www.youtube.com/watch?v=6QNgdElOkJw

http://www.educ.fc.ul.pt/icm/icm99/icm21/introducao.htm

Abraços